Ajustification rather than a basic cause of european imperialism was the moral obligation to bring western civilization to less developed areas ambition to control sources of raw materials need to develop new markets for europe's expanding industries political rivalry among the nations of europe

Why was the u.s. annexation of hawaii delayed until william mckinley became president? a: the rebels who overthrew queen liliuokalani opposed u.s. annexation. b: the senate did not approve the treaty of annexation until mckinley entered the white house. c: supporters of the nationalist cause were in the majority in hawaii until 1898. d: mckinley’s predecessor, grover cleveland, refused to sign the treaty of annexation.